Progresses in developing a high current RFQ injector

Shixiang Peng; Meng Zhang; Jie Zhao; Rong Xu; Haitao Ren; Pengnan Lv; Zhizhong Song; Jinxiang Yu; Zhongxi Yuan; Zhiyu Guo

Progresses in developing a high current RFQ injector

Shixiang Peng, Meng Zhang, Jie Zhao, Rong Xu, Haitao Ren, Pengnan Lv, Zhizhong Song, Jinxiang Yu, Zhongxi Yuan, Zhiyu Guo

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

An injection system of 50 mA @50 keV D⁺ ion beam is needed for thermal neutron radiography based on 2 MeV RFQ at PKU. Its duty factor is 10%. The RMS emmitance is 0.20 Timm-mrad with α= 1.93 and β=5.16 cm/rad. To achieve these specifications, we developed an ion source test bench and a LEBT test bench based on a permanent magnet 2.45 GHz microwave-driven ion source (ECR). When the microwave power is less than 450 W, the total extracted H⁺ current is larger than 80 mA, and the proton fraction is better than 90%. The RMS emmitance is about 0.2-0.3 7π·mm·mrad. With a semi-closed solenoid, the transport efficiency of LEBT is better than 80%. In addition, studies were conducted on influence of liner material and size of the inner diameter.

Original language	English
Pages (from-to)	165-168
Number of pages	4
Journal	He Jishu/Nuclear Techniques
Volume	32
Issue number	3
State	Published - Mar 2009
Externally published	Yes

Keywords

Beam current
Emmitance
Injector
LEBT
Microwave-driven ion source
Transport efficiency

Cite this

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title = "Progresses in developing a high current RFQ injector",

abstract = "An injection system of 50 mA @50 keV D+ ion beam is needed for thermal neutron radiography based on 2 MeV RFQ at PKU. Its duty factor is 10%. The RMS emmitance is 0.20 Timm-mrad with α= 1.93 and β=5.16 cm/rad. To achieve these specifications, we developed an ion source test bench and a LEBT test bench based on a permanent magnet 2.45 GHz microwave-driven ion source (ECR). When the microwave power is less than 450 W, the total extracted H+ current is larger than 80 mA, and the proton fraction is better than 90%. The RMS emmitance is about 0.2-0.3 7π·mm·mrad. With a semi-closed solenoid, the transport efficiency of LEBT is better than 80%. In addition, studies were conducted on influence of liner material and size of the inner diameter.",

keywords = "Beam current, Emmitance, Injector, LEBT, Microwave-driven ion source, Transport efficiency",

author = "Shixiang Peng and Meng Zhang and Jie Zhao and Rong Xu and Haitao Ren and Pengnan Lv and Zhizhong Song and Jinxiang Yu and Zhongxi Yuan and Zhiyu Guo",

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journal = "He Jishu/Nuclear Techniques",

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TY - JOUR

T1 - Progresses in developing a high current RFQ injector

AU - Peng, Shixiang

AU - Zhang, Meng

AU - Zhao, Jie

AU - Xu, Rong

AU - Ren, Haitao

AU - Lv, Pengnan

AU - Song, Zhizhong

AU - Yu, Jinxiang

AU - Yuan, Zhongxi

AU - Guo, Zhiyu

PY - 2009/3

Y1 - 2009/3

N2 - An injection system of 50 mA @50 keV D+ ion beam is needed for thermal neutron radiography based on 2 MeV RFQ at PKU. Its duty factor is 10%. The RMS emmitance is 0.20 Timm-mrad with α= 1.93 and β=5.16 cm/rad. To achieve these specifications, we developed an ion source test bench and a LEBT test bench based on a permanent magnet 2.45 GHz microwave-driven ion source (ECR). When the microwave power is less than 450 W, the total extracted H+ current is larger than 80 mA, and the proton fraction is better than 90%. The RMS emmitance is about 0.2-0.3 7π·mm·mrad. With a semi-closed solenoid, the transport efficiency of LEBT is better than 80%. In addition, studies were conducted on influence of liner material and size of the inner diameter.

AB - An injection system of 50 mA @50 keV D+ ion beam is needed for thermal neutron radiography based on 2 MeV RFQ at PKU. Its duty factor is 10%. The RMS emmitance is 0.20 Timm-mrad with α= 1.93 and β=5.16 cm/rad. To achieve these specifications, we developed an ion source test bench and a LEBT test bench based on a permanent magnet 2.45 GHz microwave-driven ion source (ECR). When the microwave power is less than 450 W, the total extracted H+ current is larger than 80 mA, and the proton fraction is better than 90%. The RMS emmitance is about 0.2-0.3 7π·mm·mrad. With a semi-closed solenoid, the transport efficiency of LEBT is better than 80%. In addition, studies were conducted on influence of liner material and size of the inner diameter.

KW - Beam current

KW - Emmitance

KW - Injector

KW - LEBT

KW - Microwave-driven ion source

KW - Transport efficiency

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M3 - Article

AN - SCOPUS:64049109189

SN - 0253-3219

VL - 32

SP - 165

EP - 168

JO - He Jishu/Nuclear Techniques

JF - He Jishu/Nuclear Techniques

IS - 3

ER -

Progresses in developing a high current RFQ injector

Abstract

Keywords

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